Machine for upsetting drawbars



a. L. ROWE July 16, 1929 I 1.72l,042

' MACHINE FOR UPSETTING DRAW BARS I Filed March 21, 1927 2 Sheets-Sheet 1 July 16, 1929. B. L. ROWE MACHINE FOR UPSETTING DRAW EARS Filed March 21,1927 2 Sheets-Sheet 2 Nw VN Q km. k n NW xx MN mm) Patented July 16, 1929.

Uhll'lED STATES 1,721,042 PATENT OFFICE.

BERT L. ROWE, OF BARSTOW, CALIFORNIA.

MACHINE FOR UPSETTING DRAWZBARS.

Application filed March 21, 1927. Serial No. 177,200.

This invention has. reference to a machine cspeci ally designed for use. in upsetting draw bars of locomotives, side rods, brake beams and the like to shorten them, thereby conditioning them for further use.

Au in'iportaut object of the invention is to provide a machine of this character wherein the hammer or plunger is operated under hydraulic pressure, to the end that the article under treatment may be subjected to excessive pressure.

A. further object of the invention is the provision of a machine of this type. having means to prevent buckling of the article undcr operation to distort the same.

With the foregoing and other Objects in view which will appear as the description proceeds, the invention resides in the comhina'tion and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is a plan view of a machine constructed in accordance with the invention.

Figure 2 is a longitudinal sectional view through the machine.

Figure 3 is a. sectional view taken on line 3 of Figure 1.

Figure 4 is a sectional view taken on line 4ll of l igure 1.

Fi; re 5 is a sectional view taken on line 5 5 of Figure 1.

l igure 6 is a sectional view taken on line -G of Figure 1.

Referring to the drawings in detail, the device embodies a frame including spaced side bars 5 that have their outer ends connected by means of the transverse bar 6 that also acts as a stop against which one end of the draw bar, or article under treatment, engages during the upsetting operation.

7 At. the forward end of the frame are substantially U-shaped frames 7 that have their upper ends connected to the bars 5. the frames 7 providing means whereby the front axle 8 may be pivotally connected to the main frame of the machine. lVheels 9 are mounted on the ends of the axle 8 for supporting the forward portion of the frame' V As shown by Figure 1 the opposite ends of the bars 5 extend slightly inwardly and rearwardly where they are arranged in parallel relation with each other and secured in such parallel relation by means of the yoke 10 that embodies sen'iicircular members held together by means of bolts 11, the circular portions also providing supports for the cylinder 12 to be hereinafter more fully described.

This cylinder 12 is provided with substantially flat upper and lower surfaces to which the upper and lower transverse bars 13 are secured, there being provided bolts 14 that pass through the transverse bars 13 and cylinder for securing the cylinder in position against lateral and longitudinal movement.

Substantially U-shaped frames 15 are secured to this end of the main frame of the machine and to which frames 15 is secured the axle 16 on which the wheels 17 are mounted, to the end that the machine may be moved from place to place, for convenience.

Extending from the main frame and secured thereto by means of the bolts 14-, is a platform 18 on which the tank 19 is mounted, the tank being in communication with the pump 20 through the medium of the pipe 21 which is supplied with a check valve 22 that allows fluid to pass from the tank 19 into the pump. A pipe 23 is also in comnmnication with the tank 19and has connection with the pipe 24 which in turn communicates with the interior of the cylinder 12. A check valve 25 is disposed between. the pump and cylinder 12 so that pressure, will be held in the cylinder when established therein by the pump.

Located in the pipe 23 is a manually con trolled valve 26 which may be operated to allow fluid to pass from the cylinder through the pipe 24 and into the tank after the machine has been operated to upset an article.

Moving in the cylinder 12 is the plunger 27 that has a head 28 at its forward end, the head being provided with a recessed portion so that it may closely engage one end of a draw bar or article to be upset.

Extending laterally from the head 28 are arms 29 to which the flexible members 30 are secured, the flexible members also passing over the pulleys 31 mounted at the rear ends of the bars 5, there being provided weights 32 on the free ends of the flexible members 30 for returning the plunger 27 to its inactive or initial position after it has been forced forwardly to accomplish its purpose.

Adjustably mounted on the main frame are supports 33 which embody lower members 34 that have upwardly and inwardly extended end portions 35 that embrace portions of the side bars 5 of the main frame to permit of movement of the supports longitudinally of the main frame so that the device may be employed for supporting articles of VttllOllS lengths. Cooperating with the members 34 are bars 36 that rest on the inwardly extended end portions 85, the bars 36 and members at having aligning openings to receive the bolts 36 that have threaded portions on which the nuts 37 are positioned, the nuts 37 being provided with handles 38 whereby the nuts may be operated to clamp the bars 36 to the members 34.

In order that the article under operation may be securely held within the supports, liller plates 39 are provided and are designed to be positioned between the article and members of the supports as clearly illustrated by Figure (5 of the drawings.

Threaded openings are formed in the bars 5 of the frame and are disposed in spaced relation with each other, the same being de signed to accomn'iodate the screws 40 which are provided with handles :l-l to permit them to be readily opt-waited. As illustrated by Figure 1, these screws 40 are designed to engage the side edges of the article under operation, which in the present showing is a draw bar and for the sake of convenience is illustrated at A.

In operation, the valve 26 is operated so that water may pass from the tank 19 through the pipe 23 and into the cylinder 12. the pump 20 being operated to force the fluid through the pipe 23. Owing to the force of the fluid against the piston 27, the piston 27 forced outwardly against the draw bar or article supported by the main frame, it being understood that tln article under treatment before its positioning in the supports of the frame is heated in the usual and well known manner.

It is obvious that as the head 28 of the piston is brought into engagement with the end of the bar under treatment, the bar will be upset to shorten it, and due to the construction of the supports and screws .20, the upsetting will be accurately accomplished, eliminating any possibility of buckling.

I claim:

1. A machine for upsetting draw bars, including a frame embodying spaced longitudinal side bars, said side bars having threaded openings, screws extending through the threaded openings and adapted to engage the sides of a bar positioned in the machine to hold the bar against lateral lllOVQll'lBllt, transversely extended bars forming a part of the frame, bolts extending through the transversely extended bars to hold the bars into close engagement with the bar under treatment, and means at one end of the machine for striking one end of the bar under treatment.

2. A machine tor upsetting draw bars, including a tramc embodying spaced side bars, a lower bar supported adjacent to each end of the frame. each lower bar havingupwardly.

bars resting on the inwardly extended ends.

In testimony that I claim the foregoing as my own, I have hereto atlixed my signature.

BERT L. ROVE. 

